I suffer from bouts of Sciatica from time to time. So I am very careful about lifting and working. When that starts up there is no description of pain I can think of. You'd thank someone who shot you it hurts so bad.
You be careful with that back. I would head to a doctor. They will put you on muscle relaxers and pain killers and you might not even mind missing the rest of deer season.. Real sorry to hear about your injury.